<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); class Freshbooks { function loop($request) { // Define request, username, password, and api url define('XML_PAYLOAD',$request); define('XML_POST_USER','your_TOKEN'); define('XML_POST_PASS', 'X'); define('XML_POST_URL', 'https://example.freshbooks.com/api/2.1/xml-in'); // cURL to make it rain $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, XML_POST_URL); curl_setopt($ch, CURLOPT_USERPWD, XML_POST_USER.":".XML_POST_PASS); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt($ch, CURLOPT_TIMEOUT, 4); curl_setopt($ch, CURLOPT_POSTFIELDS, XML_PAYLOAD); curl_setopt($ch, CURLOPT_HTTPHEADER, array('Connection: close')); // Run timer to see how long the total result takes. $start = array_sum(explode(' ', microtime())); $result = curl_exec($ch);  $stop = array_sum(explode(' ', microtime())); $totalTime = $stop - $start; // Check for errors if ( curl_errno($ch) ) { $result = 'cURL ERROR -> ' . curl_errno($ch) . ': ' . curl_error($ch); } else { $returnCode = (int)curl_getinfo($ch, CURLINFO_HTTP_CODE); switch($returnCode){ case 200: break; default: $result = 'HTTP ERROR -> ' . $returnCode; break; } } // Close the cURL stuff that just rained curl_close($ch); // Return the result return $result; // Probably will need to delete this, because I'm not sure what it does...Google me baby. exit(0); } } ?>

&lt;? class Update_billing extends Controller { function Update_billing() { parent::Controller(); } function index() { $this->load->library('freshbooks'); $request = '&lt;?xml version="1.0" encoding="utf-8"?&gt;<request method="recurring.get"><recurring_id>1</recurring_id></request>'; $result = $this->freshbooks->loop($request); echo $result; } }